This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A teacher wants to see if two different forms of an exam are equivalent or if one of the exams is ... (Read 242 times)

OSWALD

  • Hero Member
  • *****
  • Posts: 580
on: Aug 30, 2019
A teacher wants to see if two different forms of an exam are equivalent or if one of the exams is more difficult than the other. She has 120 students, which she randomly sorts into two groups of 60. The group that that takes exam A has a mean score of 78.1% with a standard deviation of 5.6%. Exam B scores an average of 74.8% with a standard deviation of 8.7%.

Find and interpret a 95% confidence interval. Also explain how the values of your confidence interval correspond with your conclusion on #1.
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by OSWALD on Aug 30, 2019

sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Aug 30, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


OSWALD

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Aug 30, 2019
Thanks


sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Aug 30, 2019
Welcome :)


« previous next »
 

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

The work of Charles Darwin forms the foundation for modern evolutionary theory. The work of Charles Darwin forms the foundation for modern evolutionary theory.
Convergent evolution in body forms Convergent evolution in body forms
Digital rectal exam (DRE). The physician’s index finger is inserted into the rectum and pressed agai Digital rectal exam (DRE). The physician’s index finger is inserted into the rectum and pressed agai
Illusionary picture of teacher’s head exploding Illusionary picture of teacher’s head exploding
Mass Wasting Forms Mass Wasting Forms
What rate, compounded once every 3 years, is equivalent to 9% effective rate? What rate, compounded once every 3 years, is equivalent to 9% effective rate?
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library